Hyundai Sonata LF: Air Conditioning System / Refrigerant Line Components and Components Location

Compressor oil Repair procedures

Oil Specification 1. The R-134a system requires synthetic (ND8) compressor oil whereas the R-12 system requires mineral compressor oil. The two oils must never be mixed...

Refrigerant Line Repair procedures

Replacement 1. If the compressor is marginally operable, run the engine at idle speed, and let the air conditioning work for a few minutes, then shut the engine off...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Troubleshooting

Basic Troubleshooting Basic Troubleshooting Guide Customer Problem Analysis Sheet Basic Inspection Procedure Measuring Condition of Electronic Parts' Resistance The measured resistance at high temperature after vehicle running may be high or low...

Hyundai Sonata LF 2014-2019 Service Manual: Fuel Pressure Sensor (FPS) Schematic Diagrams

Circuit Diagram Fail-Safe Mode Item Fail-Safe Output Voltage (V) 12     If the fuel pressure sensor malfunctions, it enters fail safe mode. This means that the fuel pressure rises to match the increasing value of the current level and the pressure in the low pressure fuel line remains static despite the rising fuel pressure...